If you prefer to wait for the official launch, keep your browser pointed to Firefox.com. You may also want to check out the Mozilla blog, which is bound to have an announcement soon. If you use Firefox on your Android device, make sure to check for app updates over on the Google Play Store as a new version is likely coming soon this week as well.

There’s no official Firefox 18 changelog as of yet, but the beta release notes should serve as a decent guideline:

We will update you with more information (including the official changelog) when Firefox 18 officially launches. In the meantime, if you’re a Web developer, you may want to check out Firefox 18 for developers.